Originally Posted by BWT
Did you have to modify the Infinity to make it fit and are you running them off the head unit or external amp?
no the Infinity References were pretty much plug and play, 4 inch fit. The speakers had 4 holes instead of OEM 3 holes, but that can be easily modified to fit the speaker into the existing hole/mounting location.
I run them off the head unit just like the standard speakers, however the sound quality is better and fidelity / clarity is greater as well due to an in-built tweeter.
The total cost was $110 from a local audio shop, so quite a cheap mod.